'\" t
.\"     Title: nvme-telemetry-log
.\"    Author: [FIXME: author] [see http://www.docbook.org/tdg5/en/html/author]
.\" Generator: DocBook XSL Stylesheets vsnapshot <http://docbook.sf.net/>
.\"      Date: 11/04/2025
.\"    Manual: NVMe Manual
.\"    Source: NVMe
.\"  Language: English
.\"
.TH "NVME\-TELEMETRY\-LOG" "1" "11/04/2025" "NVMe" "NVMe Manual"
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.SH "NAME"
nvme-telemetry-log \- Retrieves a Telemetry Host\-Initiated log page from an NVMe device
.SH "SYNOPSIS"
.sp
.nf
\fInvme telemetry\-log\fR <device> [\-\-output\-file=<file> | \-O <file>]
                        [\-\-host\-generate=<gen> | \-g <gen>]
                        [\-\-output\-format=<fmt> | \-o <fmt>] [\-\-verbose | \-v]
.fi
.SH "DESCRIPTION"
.sp
Retrieves an Telemetry Host\-Initiated log page from an NVMe device and provides the returned structure\&.
.sp
The <device> parameter is mandatory and may be either the NVMe character device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1)\&.
.sp
On success, the returned log structure will be in raw binary format \fIonly\fR with \-\-output\-file option which is mandatory\&.
.SH "OPTIONS"
.PP
\-O <file>, \-\-output\-file=<file>
.RS 4
File name to which raw binary data will be saved to\&.
.RE
.PP
\-g <gen>, \-\-host\-generate=<gen>
.RS 4
If set to 1, controller shall capture the Telemetry Host\-Initiated data representing the internal state of the controller at the time the associated Get Log Page command is processed\&. If cleated to 0, controller shall
\fInot\fR
update this data\&.
.RE
.PP
\-d <da>, \-\-data\-area=<da>
.RS 4
Retrieves the specific data area requested\&. Valid inputs are 1,2,3,4\&. If this option is not specified, the default value is 3, since data area 4 may not be supported\&.
.RE
.PP
\-o <fmt>, \-\-output\-format=<fmt>
.RS 4
Set the reporting format to
\fInormal\fR,
\fIjson\fR
or
\fIbinary\fR\&. Only one output format can be used at a time\&.
.RE
.PP
\-v, \-\-verbose
.RS 4
Increase the information detail in the output\&.
.RE
.SH "EXAMPLES"
.sp
.RS 4
.ie n \{\
\h'-04'\(bu\h'+03'\c
.\}
.el \{\
.sp -1
.IP \(bu 2.3
.\}
Retrieve Telemetry Host\-Initiated data to telemetry_log\&.bin
.sp
.if n \{\
.RS 4
.\}
.nf
# nvme telemetry\-log /dev/nvme0 \-\-output\-file=telemetry_log\&.bin
.fi
.if n \{\
.RE
.\}
.RE
.SH "NVME"
.sp
Part of the nvme\-user suite
